osDynLibrary.cpp revision 56513f5ff4f3e851c5f0cb38dc8851d18616b3c0 
1/*
2* Copyright (C) 2011 The Android Open Source Project
3*
4* Licensed under the Apache License, Version 2.0 (the "License");
5* you may not use this file except in compliance with the License.
6* You may obtain a copy of the License at
7*
8* http://www.apache.org/licenses/LICENSE-2.0
9*
10* Unless required by applicable law or agreed to in writing, software
11* distributed under the License is distributed on an "AS IS" BASIS,
12* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13* See the License for the specific language governing permissions and
14* limitations under the License.
15*/
16#include "osDynLibrary.h"
17
18#ifndef _WIN32
19#include <dlfcn.h>
20#endif
21#include <stdio.h>
22
23namespace osUtils {
24
25dynLibrary *dynLibrary::open(const char *p_libName)
26{
27    dynLibrary *lib = new dynLibrary();
28    if (!lib) {
29        return NULL;
30    }
31
32#ifdef _WIN32
33    lib->m_lib = LoadLibrary(p_libName);
34#else // !WIN32
35    lib->m_lib = dlopen(p_libName, RTLD_NOW);
36#endif
37
38    if (lib->m_lib == NULL) {
39        printf("Failed to load %s\n", p_libName);
40#ifndef _WIN32
41        printf("error %s\n", dlerror()); //only on linux
42#endif
43        delete lib;
44        return NULL;
45    }
46
47    return lib;
48}
49
50dynLibrary::dynLibrary() :
51    m_lib(NULL)
52{
53}
54
55dynLibrary::~dynLibrary()
56{
57    if (NULL != m_lib) {
58#ifdef _WIN32
59        FreeLibrary(m_lib);
60#else // !WIN32
61        dlclose(m_lib);
62#endif
63    }
64}
65
66dynFuncPtr dynLibrary::findSymbol(const char *p_symName)
67{
68    if (NULL == m_lib) {
69        return NULL;
70    }
71
72#ifdef _WIN32
73    return (dynFuncPtr) GetProcAddress(m_lib, p_symName);
74#else // !WIN32
75    return (dynFuncPtr) dlsym(m_lib, p_symName);
76#endif
77}
78
79} // of namespace osUtils
80